Home Brewing Temperature Monitor Kit with ESP32 + Servo
Precision Home Brewing Temperature Monitor Kit — Automate Attic Ventilation with ESP32 and DS18B20
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Inconsistent fermentation temperatures can ruin a batch of homebrew. This kit lets you build a dual‑zone temperature monitor that reads your attic and outdoor ambient temperatures simultaneously. When the attic becomes hotter than the outside air, a servo‑driven vent opens automatically to equalize the space — protecting your fermenters from temperature spikes without any manual intervention.
What You'll Build
You will assemble and program a standalone monitoring station powered by an ESP32. It samples three DS18B20 probes (two for the attic/outdoor comparison, one spare for your fermentation vessel), displays live readings on a crisp 0.96‑inch OLED, and logs every data point to a MicroSD card with accurate timestamps from the DS3231 RTC. The real payoff: two SG90 servos controlled by the ESP32 open or close your physical vent based on the temperature differential you set.
What You'll Learn
- One‑Wire communication with multiple DS18B20 temperature sensors
- Pulse‑width modulation (PWM) to precisely position servo motors
- I²C protocol for integrating the OLED display and DS3231 real‑time clock
- Data logging to a MicroSD card with SPI interface for long‑term trend analysis
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| DS18B20 Probe | 3 |
| SG90 Servo | 2 |
| DS3231 RTC | 1 |
| MicroSD Module | 1 |
| 0.96in OLED | 1 |
| LM2596 Buck Converter | 1 |
| 4.7kΩ Resistors | 5 |
| 100nF Capacitors | 10 |
| PCB Prototype Board | 2 |
| Enclosure Box | 1 |
| 12V Adapter | 1 |
| Soldering Iron | 1 |
| Solder Wire | 1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
Serious homebrewers who want hardware-level control over their fermentation environment will immediately see the value. It’s equally suited to B.Tech ECE or EEE final‑year students building a data‑driven automation project, or professionals prototyping a smart attic ventilation system for a larger home‑automation setup. If you can solder and are comfortable modifying Arduino ESP32 code, you’ll own a fully customized climate monitor that no off‑the‑shelf gadget can match.
Built and Backed by Compoden
Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.
What if I get stuck during the build?
Open the AI companion via the QR code — it knows every wire, component, and line of code for this kit. Our team also monitors WhatsApp for quick human‑guided troubleshooting.
Can I use this to control a heating element or a fan instead of a vent?
Absolutely. The two servo channels can be repurposed to trigger relays for a heater or fan. The logic you program determines the action based on temperature thresholds.
Will the DS18B20 probes survive in a hot, dusty attic?
The probes are waterproof and rated for -55°C to +125°C. For long‑term attic deployment, we recommend placing the probe tip inside the included enclosure box with a small opening for air flow, protecting the connector from dust.
Do I need prior experience with ESP32 or Arduino IDE?
Yes, this is an advanced kit. You should have basic experience uploading code to an ESP32 and handling library installations. The AI companion provides full source code and wiring diagrams, but familiarity with the IDE will speed up your build.
Brewing — DS18B20 in attic + DS18B20 outside compare temperatures. Opens servo vent when attic hotter than outside.
What's in this kit
Choose your assembly option:
- Soldering Kit — 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
- Breadboard Combo — 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.
Other projects you can build
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items